Figure 2
A portion of the complex three-dimensional hydrogen-bonded network of (I), viewed along the a axis. The central hydrogen-bonded phosphate ribbon chain (denoted p) is additionally hydrogen bonded to four codeine chains. The two independent codeine cations are denoted I and II. The water molecules (w) act as (c)O⋯H—O—H⋯O(p) bridges between the cation and anion chains. P atoms, water O atoms (dark) and all atoms directly engaged in hydrogen bonding are drawn as balls. Two R43(16) rings are indicated by asterisks (*). |